Monitoring effects of remediation on natural sediment recovery in Sydney Harbour, Nova Scotia

@article{Walker2013MonitoringEO,
  title={Monitoring effects of remediation on natural sediment recovery in Sydney Harbour, Nova Scotia},
  author={Tony R. Walker and Devin MacAskill and Theresa Rushton and Andrew H. Thalheimer and Peter Weaver},
  journal={Environmental Monitoring and Assessment},
  year={2013},
  volume={185},
  pages={8089-8107}
}
Chemical contaminants were assessed in Sydney Harbour, Nova Scotia during pre-remediation (baseline) and 3 years of remediation of a former coking and steel facility after nearly a century of operation and historical pollution into the Sydney Tar Ponds (STP). Concentrations of polycyclic aromatic hydrocarbons (PAHs), polychlorinated biphenyls, metals, and inorganic parameters measured in sediments and total suspended solids in seawater indicate that the overall spatial distribution pattern of… Expand
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Environmental recovery in Sydney Harbour, Nova Scotia: evidence of natural and anthropogenic sediment capping.
TLDR
Concentrations of PAHs; PCBs; and lead measured in surface sediments indicate overall spatial distribution patterns of historical contaminants remains unchanged, although at much lower concentrations than previously reported due to natural sediment recovery. Expand
Legacy contaminant bioaccumulation in rock crabs in Sydney Harbour during remediation of the Sydney Tar Ponds, Nova Scotia, Canada.
TLDR
Current contaminant burdens measured in crabs were much lower than previously reported in other studies of crabs and lobster in industrial harbours in eastern Canada, due in part to natural recovery of SH sediments. Expand
Ecological Risk Assessment of Sediments in Sydney Harbour, Nova Scotia, Canada
Contamination within sediments of Sydney Harbour (once a major industrial port) were evaluated using a multiple lines-of-evidence (LOE) ecological risk assessment (ERA) approach prior to divestiture… Expand
Monitoring water quality in Sydney Harbour using blue mussels during remediation of the Sydney Tar Ponds, Nova Scotia, Canada
TLDR
The lack of detection of most individual PAHs and PCBs, plus relatively low bio-accumulation of metals observed during baseline and remediation attest to the effectiveness of using mussels as monitoring tools for environmental quality. Expand
Baseline characterization of sediments and marine biota near industrial effluent discharge in Northumberland Strait, Nova Scotia, Canada.
TLDR
Results indicated limited contamination in sediments and biota, posing low risk to marine biota when compared to Canadian Council of Ministers of the Environment sediment quality guidelines and Canadian Food Inspection Agency tissue guidelines. Expand
Spatiotemporal characterization of metals in small craft harbour sediments in Nova Scotia, Canada.
TLDR
Despite wide temporal coverage (16 years), large variation in sediment concentrations across SCHs were likely due to regular dredging activities preventing long-term accumulation of contaminants, suggesting limited ecological impairment to marine biota. Expand
Spatiotemporal assessment (quarter century) of pulp mill metal(loid) contaminated sediment to inform remediation decisions
TLDR
To help return Boat Harbour to a tidal estuary, more detailed sampling is required to better characterize these sediments and to establish appropriate reference (background) concentrations to help develop cost-effective remediation approaches for this decades-old problem. Expand
Characterization and spatial distribution of organic-contaminated sediment derived from historical industrial effluents
TLDR
High sediment PCDD/F concentrations have persisted in Boat Harbour despite implementation of Pulp and Paper Mill Effluent Chlorinated Dioxins and Furans Regulations in 1992, and remediation of the entire sediment inventory is recommended. Expand
Blue mussels ( Mytilus edulis ) as bioindicators of stable water quality in Sydney Harbour during remediation of the Sydney Tar Ponds, Nova Scotia, Canada
Contaminants were measured in blue mussels ( Mytilus edulis ) in Sydney Harbour (SH) during remediation of the Sydney Tar Ponds (STPs) to assess the spatio-temporal distribution of polycyclic… Expand
Forensic assessment of polycyclic aromatic hydrocarbons at the former Sydney Tar Ponds and surrounding environment using fingerprint techniques.
TLDR
PAH contamination of Sydney Harbour sediments and urban soils is largely unrelated to historic coking operations or recent remediation of the STPs site, but rather a legacy of extensive use of coal for a variety of activities. Expand
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